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Preprint VersionCC BY V4.0, Open Access
Preprint
Competition in a mixed-species planting with four contrasting species
Research Square, Vol.4 August 2021
Research Square Company
2021
Abstract
Background: Mixed-species systems are well-suited to smallholder and community forestry, but reliable evidence regarding and procedures to assess species performance in such systems is scarce. This study concern a field trial with a pair of clinal plots varying spacing and species composition that offered insights into competition between four species proposed for mixed-species plantings by smallholders for landscape rehabilitation in the Philippines.
Results: Use of a size-distance competition index allowed an assessment of the competitive and collaborative influences between four tree species. Within the expected general trend for growth to decline with increasing competition, there were indications that Shorea palosapis is a benign competitor that may stimulate the growth of neighbouring individuals. Paraserianthes falcataria is a strong competitor that is also strongly impacted by competition, especially through antagonistic intraspecific competition. Paraserianthes falcataria appears well suited as a solitary tree in a field or village, whereas Shorea palosapis seems ideal for plantations, in both monoculture and mixed plantings.
Conclusion: Pterocarpus indicus exbibits strong intraspecific, but low inter-specific competition, so appears well-suited for polyculture plantings. Of the four species, Swietenia macrophylla appears to be best-suited as a monoculture species as it exhibits the lowest intraspecific competition.
Details
- Title
- Competition in a mixed-species planting with four contrasting species
- Authors
- Jerry Vanclay (Author) - Southern Cross UniversityNestor Gregorio (Author) - University of the Sunshine Coast, Queensland, Tropical Forests and People Research CentreJohn Herbohn (Author) - University of the Sunshine Coast, Queensland, Tropical Forests and People Research Centre
- Publication details
- Research Square, Vol.4 August 2021
- Publisher
- Research Square Company
- Date published
- 2021
- DOI
- 10.21203/rs.3.rs-732659/v1
- ISSN
- 2693-5015
- Copyright note
- This work is licensed under a CC BY 4.0 License.
- Organisation Unit
- Australian Centre for Pacific Islands Research; Tropical Forests and People Research Centre; Forest Industries Research Centre; Forest Research Institute
- Language
- English
- Record Identifier
- 99571604402621
- Output Type
- Preprint
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